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In-memory database with basic SQL

1Give yourself 5 minutes
2Answer out loud, not in your head
3Then compare with the answer below

Reference answer

Then expect these follow-ups

  • How would you add `GROUP BY`?

  • `ORDER BY`?

  • Indexed lookups via B-trees?

  • How would you shard across 16 nodes?

  • How would you test it (correctness fuzzing vs property-based testing)?

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